phone stuck on boot screen loop

[koustuvdgp]

:smileysad:I own Xperia M dual C2004. Last night before sleeping it had 93% charge. When I woke up it had no charge and red LED flashed when I tried to switch it on. After an hour of charging it switched on but stuck in boot loop....i mean the Xperia Cosmic art...Please sort it out guys.....its urgent!! ASAP!!

[Alexander1]

Try to remove SIM card, SD card and battery for a while. Put back the battery and try to start it. 

If the problem still persists, I suggest that you repair the phone software using PC Companion:

http://www.sonymobile.com/update

In PC Companion, press start on Support Zone > Start on Update the phones software > Press the blue link that says "Repair phone". Do this without the phone connected to the PC and then follow the instructions in the program.